root@fledgling:/mnt/target # gdb -ix ~/gdb-start -c login.core usr/bin/login
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Reading symbols from usr/bin/login...Reading symbols from /mnt/target/usr/lib/debug/usr/bin/login.debug...done.
done.
[New LWP 100088]

warning: Can't read pathname for load map: Unknown error: -1.

warning: Can't read pathname for load map: Unknown error: -1.

warning: Can't read pathname for load map: Unknown error: -1.

warning: Can't read pathname for load map: Unknown error: -1.

warning: Can't read pathname for load map: Unknown error: -1.

warning: Can't read pathname for load map: Unknown error: -1.

warning: Can't read pathname for load map: Unknown error: -1.
Core was generated by `login'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __syncicache (from=0x41e37f54, len=248) at /usr/src/lib/libc/powerpc/gen/syncicache.c:94
94			__asm __volatile ("dcbst 0,%0" :: "r"(p));
(gdb) bt
#0  __syncicache (from=0x41e37f54, len=248) at /usr/src/lib/libc/powerpc/gen/syncicache.c:94
#1  0x41818fa0 in reloc_plt (obj=0x4185f000, flags=<optimized out>, lockstate=<optimized out>) at /usr/src/libexec/rtld-elf/powerpc/reloc.c:436
#2  0x4181e4b8 in relocate_object (obj=0x4185f000, bind_now=1 '\001', rtldobj=0x41847488 <obj_rtld>, flags=0, lockstate=0xffffc970) at /usr/src/libexec/rtld-elf/rtld.c:2915
#3  0x418202c4 in relocate_object_dag (lockstate=<optimized out>, flags=0, rtldobj=<optimized out>, bind_now=1 '\001', root=<optimized out>) at /usr/src/libexec/rtld-elf/rtld.c:2835
#4  dlopen_object (name=0x0, fd=<optimized out>, refobj=<optimized out>, lo_flags=2, mode=<optimized out>, lockstate=0xffffc970) at /usr/src/libexec/rtld-elf/rtld.c:3375
#5  0x418212c0 in rtld_dlopen (name=0x0, fd=5, mode=2) at /usr/src/libexec/rtld-elf/rtld.c:3311
#6  0x41897870 in try_dlopen (modfn=<optimized out>) at /usr/src/contrib/openpam/lib/libpam/openpam_dynamic.c:87
#7  try_module (modpath=0xffffcd6c "/usr/lib/pam_login_access.so.6") at /usr/src/contrib/openpam/lib/libpam/openpam_dynamic.c:128
#8  0x41897c40 in openpam_dynamic (modname=0x41af83e0 "pam_login_access.so") at /usr/src/contrib/openpam/lib/libpam/openpam_dynamic.c:246
#9  0x41897490 in openpam_load_module (modulename=<optimized out>) at /usr/src/contrib/openpam/lib/libpam/openpam_load.c:59
#10 0x4189615c in openpam_parse_chain (style=<optimized out>, filename=<optimized out>, f=<optimized out>, facility=<optimized out>, service=<optimized out>, pamh=<optimized out>)
    at /usr/src/contrib/openpam/lib/libpam/openpam_configure.c:263
#11 openpam_load_file (pamh=0x41b08000, service=0x41af8000 "system", facility=PAM_ACCOUNT, filename=0xffffd24c "/etc/pam.d/system", style=<optimized out>)
    at /usr/src/contrib/openpam/lib/libpam/openpam_configure.c:372
#12 0x418964bc in openpam_load_chain (pamh=0x41b08000, service=0x41af8000 "system", facility=PAM_ACCOUNT) at /usr/src/contrib/openpam/lib/libpam/openpam_configure.c:427
#13 0x41895ef4 in openpam_parse_chain (style=<optimized out>, filename=<optimized out>, f=<optimized out>, facility=<optimized out>, service=<optimized out>, pamh=<optimized out>)
    at /usr/src/contrib/openpam/lib/libpam/openpam_configure.c:222
#14 openpam_load_file (pamh=0x41b08000, service=0x1805f14 "login", facility=PAM_FACILITY_ANY, filename=0xffffd70c "/etc/pam.d/login", style=<optimized out>)
    at /usr/src/contrib/openpam/lib/libpam/openpam_configure.c:372
#15 0x418964bc in openpam_load_chain (pamh=0x41b08000, service=0x1805f14 "login", facility=PAM_FACILITY_ANY) at /usr/src/contrib/openpam/lib/libpam/openpam_configure.c:427
#16 0x418966fc in openpam_configure (pamh=0x41b08000, service=0x1805f14 "login") at /usr/src/contrib/openpam/lib/libpam/openpam_configure.c:463
#17 0x4189201c in pam_start (service=0x1805f14 "login", user=0x4183e008 "root", pam_conv=0x181669c <pamc>, pamh=0x1816748 <pamh>) at /usr/src/contrib/openpam/lib/libpam/pam_start.c:87
#18 0x018036bc in main (argc=3, argv=0xffffdeb0) at /usr/src/usr.bin/login/login.c:301